Improvement in horseshoe-nail machines



2 -Sheets--Sheet 1. J. MILLS.

Horse-Shoe Nail Machines. 'Nm/135,140. Pqtented]an.21,873.

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J. MILLS.

Hors-Shoe Nail Machines. N0.135,140. PatentedJan.21.!873t AM maro-umosaAPH/c wmseafme ma cess.

UNITED A'rns JAMES MILLS, OF- KEESEVILLE, NEW YORK.

IMPROVEMENT IN HORSESHGENAlL MACSHINES.

Specification forming part of Letters Patent No. 135,]i40., dated January 21, 1873.

VHorseshoe-Nail Machine, of which the following is a specification:

My invention relates to the horseshoe-nail machine patented to H. E. and C. W. Wood` ford, October 30, 1866 5 and consists in improving the same so as to make it perform nearly, if not quite, double its usual amount of work, as hereinafter described.

Figure l is a front elevation of the machine with some of the parts sectioned. Fig. 2 is a horizontal section on the line m a: of Fig. 1. Fig. 3 is a longitudinal sectional elevation taken on the line z .e of Fig. 2. Fig. 4 is a sectional elevation taken on the line x w' of Fig. 2.

Similar letters of reference indicate corresponding parts.

A is the revolving roller-hammer. It is mounted in suitable bearings on the periphery of a disk, B, on the revolving shaft O, to which the driving-power is connected. D is the intermittingly-revolving anvil-block, with a series of, say, seven facets, E; also a stationary cutter, F, and a movable cutter, G, and having eight intermittent movements to one revolution, each movement, together with a period of rest, being synchronous with a revolution of the revolving hammer-shaft'O. This anvil-block is arranged under the hammer-shaft, at right angles to it, so that a blank being placed on one of the facets will be rolled and attened down thereon from end lto end by the hammer A in passing over it 5 and the ratchet H and pawls I, by which it is actuated, are so arranged that the anvil is moved to present the facets under the hammer when the latter is in the upper part of its course. The facet which is presented under the hammer next after the cutters is lower than the others, and each successive one is a little higher, so that the blank will be subjected'to the revolving hammer alike at each operation as its reduction and elongation progress; at the same time the blank is hammered, on the edges, one blow between the operations of the anvil and revolving hammer, by the striking-hammers J, which come up against it after the anvil-facets and the revolving hammer have passed away, and while it is elevated by the nose-piece K, the said hammers J being actuated by the rods L and eccentrics M, the latter being on the shaft C, the rods being connected to the hammer-shank P at N, and the hammer-Shanks being pivoted `at 0 to theframe or any suitable support.

The pawls I are pivoted to one of the hammer- Shanks, to have the necessary oscillation for actuating the anvilblock. The nose piece K, through which the rod is presented to the anvil and hammers, is pivoted on a shaft, Q, in a bea-ring, R, and having an arm, S, extend ing to the shank P of one of the striking-hammers above a spring, T, which is set so as to throw the nose-piece up, When it is free to act,

to lift the blank od the anvil, and hold it up between the hammers J when they come together-also when the facets E of the anvil come under it-and the said shank P has a block, U, on its side, arranged to come against the arm S just before it arrives at the end of its backward movementalso before the revolving hammer comes down on the blank, but after the anvil has stoppedand force the nose-piece and the blank down so that the latter will lie upon the anvil properly for the revolving hammer to act upon it. Behind the nose-piece there is a pair of Dipper-jaws, 2W, which hold the rod X against the drawing action of the revolving hammer, and in which it vibrates when raised and lowered by the nosepiece. The lower griperjaw has a shank, y, which extends down through the support Z, and is arranged so that the jaw can rise and fall, and the upper jaw is fixed on a spring, a, so that it can rise and fall also; and the nosepiece has an arm, b, extending back to a cam, d, on the shaft of the anvil alongside of another cam, e, which cams are so arranged on the shaft that just before the cutters come to the blank they lift the gripers and depress the nose-piece to lower the finished nail f so that the movable cutter will pass above it to be forced down and cut it ott' by the revolving hammer, which acts upon it in the same manner that it does on the blank. The said movable cutter is formed onthe end of a long bar which is mounted adjustably in a stock, g, which is pivoted at h in a hub, on the anvil shaft, to revolve with the anvil and the stationary cutter. A stationary cam, j, 1s an rrron. g

e naar@ ranged to raise the said movable cutter just fei'ere the anvil stops, When the Cutters come te the nail, and lets it escape at the moment ef stopping to be thrown down on the nail by spring 7c. The revolving hammer then cornes down on the movable cutter, and causes it te ont off the nail, the rod is then pushed forward by the attendant, or it may be by any snit-able feeding apparatus, against a stop, l, when it is ready for being acted on a gain as before to make another nail.

Thus I unite in one machine the advantages of the revolving roller-hammer and the ntermittingly-revolving anvil, by which, together with the striking-hammers, I produce a machine capable oi" making nails much faster 

